Revised 29 Jan. 2023
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Aptychotrema Norman 1926 ἀ-, Greek privative, i.e., without; ptychós (Gr. πτυχός), genitive of ptýx (πτύξ), layer or fold; trḗma (Gr. τρῆμα), hole, referring to absence of spiracular folds in nostrils

Aptychotrema rostrata (Shaw 1794) Latin for beaked, referring to its elongated snout

Aptychotrema timorensis Last 2004 –ensis, Latin suffix denoting place: Timor Sea, eastern Indian Ocean, type locality

Aptychotrema vincentiana (Haacke 1885) -[i]ana (L.), belonging to: Gulf St Vincent, South Australia, type locality

Trygonorrhina Müller & Henle 1838 Trygon (=Dasyatis, stingrays), described as having the “nose of Trygon”; rhina, possibly referring to Rhina (see Rhina, Rhinidae), then considered a confamilial genus [the extra “r” in the spelling may be a typo since Müller & Henle dropped it in a subsequent publication]

Trygonorrhina dumerilii (Castelnau 1873) in honor of Castelnau’s “late friend” August Duméril (1812–1870), herpetologist and ichthyologist, Muséum national d’Histoire naturelle (Paris)

Trygonorrhina fasciata Müller & Henle 1841 Latin for banded, referring to transverse bands on back, dorsal fin and tail

Zapteryx Jordan & Gilbert 1880 zá– (Gr. ζά), intensive particle, i.e., very; pterýx (Gr. πτέρυξ), wing or fin, referring to larger vertical fins compared with those of skates (Raja)

Zapteryx brevirostris (Müller & Henle 1841) brevis (L.), short; rostris, from rostrum (L.), snout, referring to its short and blunt snout

Zapteryx exasperata (Jordan & Gilbert 1880) Latin for made rough, referring to back entirely covered with stout, close-set, stellated prickles

Zapteryx xyster Jordan & Evermann 1896 xystḗr (Gr. ξυστήρ), scraper, rasp or file, perhaps referring to “entire lower surface covered with fine shagreen”